yamaha T50 fuel injection pump(how to test if works)

Joined
Dec 15, 2012
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Hi, have the Yamaha T50, suspected no fuel to injectors, had fuel from mechanical pump, but none going to injectors. So tore injector pump off and the filter was completetly torn and shot. I wonder if anything got inot the electric pump, and didn't know if their was a way to test if it works?. I:E:- remove pump hook 2 hoses to it and run some fuel thru it while hooked to a battery using the terminals?. Anyone suggest how often this filter should be changed, every 100 hrs or so?
 
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